Portable powder-bag.



RJE. CASSELL. PORTABLE POWDER BAG.

APPLICATION FILED FEB. 10. I915.

Patented Mar. 14, 1916.

Tm: COLUMBIA PLANDGRAPH co., WASHINGTON, D. 2:.

ensues.

PORTABLE POWDER-BAG.

Specification of Letters Patent.

Patented Mar. 14, 1916.

Application filed February 10, 1915. Serial No. 7,434.

To al? 11171 am it may concern Be it known that I, ROBERT E. CAssuLL, acitizen of the United States, residing at Vorth, in the county of McDowell and State of Vest Virginia, have invented new and useful Improvements in Portable Powder-Bags, of which the following is a specification.

This invention relates to portable powder bags and has for its primary object to so construct the bag that the contents thereof will be kept in a perfectly dry state and prevented from being ignited by static electricity or any other form of electric currents.

It is well known in the electrical art that static charges will jump from one metallic portion to another metallic portion even though there is not a complete circuit, this action being facilitated by the metallic portion being brought into close proximity with current carrying wires.

Another object of my invention is to so construct the closure of the bag that contact between the powder and metallic portions will be prevented and at the same time allowing the powder bags to be made of fireproof material such as asbestos.

A further object of the invention is to so form the cap that the neck of the bag will be reinforced at its weakest point.

A still further object of the invention is to so form the cap andbottle neck that an air tight connection is made between the in terior of the bag and the atmosphere.

The invention consists in the features of construction, combination. and arrangement of parts, hereinafter fully described and claimed, reference being had to the accompanving drawing, in which: A

Figure l is a side elevation of the complete bag. Fig. 2 is a vertical section therethrough. Fig. 3 is a section taken on line 33 of Fig. 2.

Referring to the drawing, the numeral 1 designates the body of the bag formed of asbestos or other insulating material, the body being provided at its opposite sides with pairs of loops 2 through which pass straps 3 whereby the bag may be conveniently carried by the wearer. Uprising centrally from the body of the bag is a neck 4 having its upper portion connected to a screw threaded ferrule 5 and its intermediate portion provided with an annular flange 6 having its peripheral edge lying in a higher plane than the body of said flange. Cooperating with the threaded ferrule 5 is a second threaded ferrule 7 carried by a cap. It has been found that there is an advantage in using a metallic ferrule when the body is made of asbestos for it has been found out in practice that the threads rapidly wear away when formed of a fibrous material. The neck and cap could be made of hard rubber but, from practical experience, it has been found that light affects the conductivity of hard rubber by depositing a moist film upon the surface thereof. The cap is further provided with an annular flange 8 having its under surface cooperating with the peripheral edge of the flange 6 whereby an absolute air tight fit is accomplished. Depending centrally from the cap and snugly engaging the walls of the bore of the neck is a stem 9 whereby the powder held within the body of the bag is prevented from entering the neck where there would be a chance of it coming into contact with the metallic portions. The stem 9 also reinforces the neck so as'to prevent distortion thereof which would be effected because of the rough usage to which the bag is put. As shown, the stem 9 is of greater length than the body of the cap for the purpose of guiding the cap downwardly prior to the engagement of the threads of the ferrules.

Referring to Fig. 2, it will be seen that the metallic portions forming the threads are completely housed so that static discharges cannot take place adjacent the powder. Thus. it will be seen from the foregoing description that I have provided a powder bag which is absolutely water proof and the contents thereof prevented from coming into contact with electrified bodies.

YVhat is claimed is:

In a device of the class described comprising a body portion, a neck formed integral with said body portion, a cap threaded on said neck, a threaded ferrule secured to said neck, a threaded ferrule secured to said cap and cooperating with the first mentioned ferrule, and flanges carried by said body In testimony whereof I aflix my signature and said cap arlld interlcgicking whereby upon in presence of tWo Witnesses. I I the latter reac lin its; nal nosition, a Jerfeet air tight fit i vill be accbmplished,. and ROBERT CASSELL' said ferrules completely covered, said body, Witnesses: V neck, cap and flanges being formed from S. C. STEWART, asbestos. J .S TYREE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

